ACPI_AML_BATCH_DO
ACPI_AML_BATCH_DO(STDIN_FILENO, read, cmd, ret);
ACPI_AML_BATCH_DO(fd, write, cmd, ret);
ACPI_AML_BATCH_DO(fd, read, log, ret);
ACPI_AML_BATCH_DO(STDOUT_FILENO, write, log, ret);